Youth is priceless. What's the next sentence?

Life comes at a price. Every graduation season, the principal inculcates to the graduating students: youth is priceless, friendship is priceless, and your life is precious; May you ride the wind and waves, hang directly in Yun Fan, light up the distance and start a poetic life. Youth is beautiful and priceless. Youth is the most colorful time in life. Struggle is the highest praise for youth. Only by being the best you can be on the road of struggle can life be valuable.